Search found 4 matches

by zBeeble
Mon May 17, 2021 1:43 pm
Forum:
Topic: REU: the poor man's blitter.
Replies: 13
Views: 2522

REU: the poor man's blitter.


But the solution you propose still doesn't deal with the CPU using the 8K bank at the time.  I'm just saying there's a real reason for a design change.

I don't think we've discussed whether the Vera can take a store (or fetch) per cycle, either... for that matter.

by zBeeble
Sun May 16, 2021 3:35 pm
Forum:
Topic: REU: the poor man's blitter.
Replies: 13
Views: 2522

REU: the poor man's blitter.

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by zBeeble
Sun May 16, 2021 5:28 am
Forum:
Topic: REU: the poor man's blitter.
Replies: 13
Views: 2522

REU: the poor man's blitter.

I didn't explicitly say you had to use that FPGA and I realize that the current design precludes it.  But vera -> bank would allow direct loading of the bank from media... so it makes sense. The REU + GEOS (about the only thing other than TMP that used it) ... the thing that made it rock was that t...
by zBeeble
Sun May 16, 2021 4:27 am
Forum:
Topic: REU: the poor man's blitter.
Replies: 13
Views: 2522

REU: the poor man's blitter.

So ... I've been watching with interest, but not contributing because I didn't see anything I needed to say.  I do now. I think the function of the 64/128 REU's memory transfer function is under-appreciated.  It's like a budget blitter chip.  Your memory design has 2M of memory in an 8k bottleneck....